Basic TabBar

tabBar.dart

DefaultTabController(
              length: 4,
              child: Scaffold(
                appBar: AppBar(
                  bottom: const TabBar(
                    tabs: [
                      Tab(icon: Icon(Icons.home),),
                      Tab(icon: Icon(Icons.whatshot),),
                      Tab(icon: Icon(Icons.person),),
                      Tab(icon: Icon(Icons.menu),),
                    ],
                  ),
                ),
                body: TabBarView(
                  children: [
                    Container(),
                    Container(),
                    Container(),
                    Container(),
                  ],
                ),
              ),
            );